1. JW. Goethe, who had promoted Döbereiner’s professorship, wrote in his Faust a scene where the devil, disguised as a university professor, teaches a young student: “Dann eben wo Begriffe fehlen, da stellt ein Wort zur recthen Zeit sich ein.”
2. H. Pines, and V.N. Patieff, J. Am. Chem. Soc., 70 (1948) 531.
3. E.K. Rideal, “Concepts in Catalysis.” Academic Press: London, New York. 1968.
4. S. Brunauer, P.H. Emmett, E. Teller, J. Am. Chem. Soc., 60 (1938) 309.
5. H.S. Taylor, Proc. Royal Soc. London. A108 (1925) 105.